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Evaluating Methodological Coherence and Evidence Recognition in Digital Health Systematic Reviews: Sample-based
Uwe Buddrus1, Jan-David Liebe1,2
1Professorship Digital Society, Faculty of Business, Economics and Social Sciences, Hochschule Osnabrück, CO-Gebäude, Raum 102, Albrechtstraße 30 a, Osnabrück, 49076, Germany, 49 541 969 ext 7019.
Online Journal of Public Health Informatics
|April 16, 2026
Summary
Many systematic reviews on digital health interventions lack methodological rigor, particularly in PICO (population, intervention, comparison, outcome) specification. This hinders the recognition of conclusive evidence, impacting healthcare decisions.
Area of Science:
- Health Services Research
- Evidence Synthesis
- Digital Health
Background:
- Systematic reviews on digital health interventions often lack sufficient methodological rigor.
- Methodological shortcomings impede the identification and communication of robust findings.
- Abstracts are critical for study selection in systematic reviews and automated screening.
Purpose of the Study:
- To assess the extent to which systematic reviews apply methodological standards, specifically PICO (population, intervention, comparison, outcome) element specification.
- To examine the relationship between PICO specification and the recognition of conclusive evidence at the abstract level.
Main Methods:
- A meta-research study analyzing a random sample of 250 abstracts from systematic reviews published between 2011-2023.
- Abstracts were assessed for PICO specification and evidence conclusiveness following PRISMA guidelines.
Main Results:
- 48% of reviews exhibited low or very low PICO specification.
- 64% of reviews reported inconclusive or weak evidence.
- Higher specification of outcomes and problems moderately correlated with conclusive evidence.
Conclusions:
- Methodological coherence throughout systematic reviews is essential for valid and meaningful conclusions in digital healthcare.
- A structured, PICO-based framework can enhance the focus and evidentiary strength of future systematic reviews.
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